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Redox Reactions of Amidato‐Bridged cis ‐Diammineplatinum(III) Dinuclear Complexes with Phenol
Author(s) -
Hyodo Shuntaro,
Kishi Masatoshi,
Fukushima Hiroyuki,
Iwatsuki Satoshi,
Ishihara Koji,
Matsumoto Kazuko
Publication year - 2012
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201200433
Subject(s) - chemistry , redox , phenol , aqueous solution , electron transfer , stereochemistry , reaction mechanism , medicinal chemistry , photochemistry , inorganic chemistry , organic chemistry , catalysis
Kinetic studies of the redox reactions of the head‐to‐tail (HT) α‐pyridonato‐bridged cis ‐diammineplatinum(III) dinuclear complex and of the head‐to‐head (HH) α‐pyridonato‐bridged and α‐pyrrolidonato‐bridged cis ‐diammineplatinum(III) dinuclear complexes with phenol were performed in acidic aqueous solution. Reduction of the HH Pt III dinuclear complexes with phenol proceeded only at pH > 3, whereas that of the HT Pt III dinuclear complex with phenol proceeded even at a pH as low as zero. The kinetic evaluations revealed that the Pt III dinuclear complexes are not reduced by the phenol molecule but are reduced by the phenoxide ion, and the reduction reaction proceeds through an outer‐sphere electron‐transfer mechanism.